ASTROSAT CZTI

Data Quality Report

Orbit 23625

Creation date: 2024-06-27T18:54:43.400048
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_100T02_9000003470_23625cztM0_level2.evt modeM0/AS1A07_100T02_9000003470_23625cztM0_level2_quad_clean.evt
Size (bytes)530,688,960113,037,120
Size506.1 MB 107.8 MB
Events in quadrant A3,059,784752,685
Events in quadrant B3,553,683776,484
Events in quadrant C3,206,724749,559
Events in quadrant D5,822,466703,313

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013602635
B014911660
C013929720
D022049651

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01346
B01346
C01344
D01344

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6320841.329114%
B63241973.115117%
C63191552.452920%
D632882913.100506%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7502 6358 0 0 0.00% 0.00%
B 7516 6357 70 70 0.93% 1.10%
C 7516 6347 0 0 0.00% 0.00%
D 7514 6365 721 721 9.60% 11.33%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 8541 48.81 794 780 159.0
A 3 137 7154 40.09 794 780 159.0
A 0 226 6633 36.81 794 780 159.0
B 3 64 364901 2406.71 791 770 151.3
B 0 189 51222 333.46 791 770 151.3
B 0 229 36728 237.66 791 770 151.3
C 14 238 121613 667.69 774 778 181.0
C 0 10 42130 228.5 774 778 181.0
C 7 247 27733 148.94 774 778 181.0
D 1 52 2849501 15557.19 757 734 183.1
D 12 233 85350 462.09 757 734 183.1
D 8 195 39194 210.03 757 734 183.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter